-66.99% is the change from 827 to 273
Calculation steps:
[( 273 - 827 ) ÷ 827] x 100 = -66.99%
Formula
Percentage change = [(273 - 827) / 827] x 100
Subtract the new number by the original number
273 - 827 = -554
-554 ÷ 827 = -0.6698911729141476
-0.6698911729141476 x 100 = -66.99%